GB1183387A - Resolution of Pantolactone - Google Patents
Resolution of PantolactoneInfo
- Publication number
- GB1183387A GB1183387A GB2396267A GB2396267A GB1183387A GB 1183387 A GB1183387 A GB 1183387A GB 2396267 A GB2396267 A GB 2396267A GB 2396267 A GB2396267 A GB 2396267A GB 1183387 A GB1183387 A GB 1183387A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pantolactone
- dehydroabietylamine
- salt
- acid
- mother liquor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/26—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
- C07D307/30—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D307/32—Oxygen atoms
- C07D307/33—Oxygen atoms in position 2, the oxygen atom being in its keto or unsubstituted enol form
Abstract
1,183,387. Pantolactone. DELMAR CHEMICALS Ltd. 23 May, 1967 [19 July, 1966], No. 23962/67. Heading C2C. D(-)-pantolactone , is prepared by reacting DL-pantolactone with an alkali metal hydroxide to form an alkali metal salt, contacting with an acid salt of dehydroabietylamine in a solvent, separating the precipitated crystalline dehydroabietylamine salt of L(+)-α,γ-dihydroxy-#,#- dimethyl-butyric acid, treating the mother liquor containing the dehydroabietylamine salt of D(-) - α,γ - dihydroxy - #,# - dimethylbutyric acid with a base, separating the freed dehydroabietylamine, acidifying the mother liquor and heating to reflux the acidified mother liquor containing pantoic acid and isolating the - D(-)-pantolactone.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA965842 | 1966-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1183387A true GB1183387A (en) | 1970-03-04 |
Family
ID=4142595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2396267A Expired GB1183387A (en) | 1966-07-19 | 1967-05-23 | Resolution of Pantolactone |
Country Status (7)
| Country | Link |
|---|---|
| CH (1) | CH471111A (en) |
| DE (1) | DE1618289B2 (en) |
| FI (1) | FI44593C (en) |
| FR (1) | FR1527635A (en) |
| GB (1) | GB1183387A (en) |
| NO (1) | NO126133B (en) |
| SE (1) | SE332976B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109400556A (en) * | 2018-12-29 | 2019-03-01 | 上海应用技术大学 | A kind of synthetic method of D- (-)-pantoic acid lactone |
| CN109705065A (en) * | 2018-12-29 | 2019-05-03 | 上海应用技术大学 | A kind of method of asymmetry catalysis synthesis D- (-)-pantoic acid lactone |
| CN112457181A (en) * | 2020-12-11 | 2021-03-09 | 黄冈美丰化工科技有限公司 | Synthesis method of D-calcium pantothenate |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4225506A (en) * | 1978-05-30 | 1980-09-30 | Hoffmann-La Roche Inc. | Process for manufacturing a diketone |
-
1967
- 1967-05-23 GB GB2396267A patent/GB1183387A/en not_active Expired
- 1967-05-31 DE DE19671618289 patent/DE1618289B2/en active Pending
- 1967-06-19 FR FR110940A patent/FR1527635A/en not_active Expired
- 1967-06-23 NO NO16872167A patent/NO126133B/no unknown
- 1967-06-28 CH CH913767A patent/CH471111A/en not_active IP Right Cessation
- 1967-06-30 SE SE1003667A patent/SE332976B/xx unknown
- 1967-07-14 FI FI195967A patent/FI44593C/en active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109400556A (en) * | 2018-12-29 | 2019-03-01 | 上海应用技术大学 | A kind of synthetic method of D- (-)-pantoic acid lactone |
| CN109705065A (en) * | 2018-12-29 | 2019-05-03 | 上海应用技术大学 | A kind of method of asymmetry catalysis synthesis D- (-)-pantoic acid lactone |
| CN109705065B (en) * | 2018-12-29 | 2022-10-14 | 上海应用技术大学 | Method for asymmetric catalytic synthesis of D- (-) -pantoic acid lactone |
| CN112457181A (en) * | 2020-12-11 | 2021-03-09 | 黄冈美丰化工科技有限公司 | Synthesis method of D-calcium pantothenate |
| CN112457181B (en) * | 2020-12-11 | 2023-08-29 | 黄冈美丰化工科技有限公司 | Synthesis method of D-calcium pantothenate |
Also Published As
| Publication number | Publication date |
|---|---|
| NO126133B (en) | 1972-12-27 |
| DE1618289A1 (en) | 1972-05-10 |
| FI44593B (en) | 1971-08-31 |
| DE1618289B2 (en) | 1975-01-09 |
| CH471111A (en) | 1969-04-15 |
| SE332976B (en) | 1971-03-01 |
| FR1527635A (en) | 1968-05-31 |
| FI44593C (en) | 1971-12-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |